Re: [PATCH 2/6] gpu: host1x: Fix syncpoint wait return value

Thierry Reding thierry.reding@gmail.com writes:

That doesn't sound right. Maybe drmIoctl() needs fixing instead. Looking at the history, drmIoctl() was introduced to automatically loop if a signal was received (commit 8b9ab108ec1f2ba2b503f713769c4946849b3cb2). However the ioctl(3p) manpage doesn't mention that ioctl() returns EAGAIN in case it is interrupted by a signal.

EAGAIN is being returned when the GPU is wedged to ask the application to re-submit the request, which will presumably be held until the GPU is un-wedged.